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@ -21,11 +21,12 @@ |
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* THE SOFTWARE. |
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*/ |
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// Version 1.0: Initial Release |
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// Version 1.1: Add support for Teensy 2.0 |
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#include <avr/pgmspace.h> |
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#include <avr/interrupt.h> |
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#include "usb_device.h" |
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#include "usb_keyboard.h" |
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#include "usb_debug.h" |
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#define USB_SERIAL_PRIVATE_INCLUDE |
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#include "usb_keyboard_debug.h" |
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/************************************************************************** |
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* |
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@ -63,16 +64,6 @@ |
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#define ENDPOINT0_SIZE 32 |
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#define KEYBOARD_INTERFACE 0 |
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#define KEYBOARD_ENDPOINT 3 |
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#define KEYBOARD_SIZE 8 |
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#define KEYBOARD_BUFFER EP_DOUBLE_BUFFER |
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#define DEBUG_INTERFACE 1 |
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#define DEBUG_TX_ENDPOINT 4 |
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#define DEBUG_TX_SIZE 32 |
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#define DEBUG_TX_BUFFER EP_DOUBLE_BUFFER |
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static const uint8_t PROGMEM endpoint_config_table[] = { |
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0, |
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0, |
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@ -191,7 +182,7 @@ static uint8_t PROGMEM config1_descriptor[CONFIG1_DESC_SIZE] = { |
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0, // bCountryCode |
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1, // bNumDescriptors |
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0x22, // bDescriptorType |
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sizeof(keyboard_hid_report_desc), // wDescriptorLength |
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sizeof(keyboard_hid_report_desc), // wDescriptorLength |
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0, |
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// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13 |
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7, // bLength |
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@ -255,17 +246,22 @@ static struct usb_string_descriptor_struct PROGMEM string2 = { |
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// This table defines which descriptor data is sent for each specific |
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// request from the host (in wValue and wIndex). |
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static struct descriptor_list_struct { |
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uint16_t wValue; |
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uint16_t wValue; // descriptor type |
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uint16_t wIndex; |
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const uint8_t *addr; |
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uint8_t length; |
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} PROGMEM descriptor_list[] = { |
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// DEVICE descriptor |
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{0x0100, 0x0000, device_descriptor, sizeof(device_descriptor)}, |
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// CONFIGURATION descriptor |
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{0x0200, 0x0000, config1_descriptor, sizeof(config1_descriptor)}, |
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// HID REPORT |
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{0x2200, KEYBOARD_INTERFACE, keyboard_hid_report_desc, sizeof(keyboard_hid_report_desc)}, |
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{0x2100, KEYBOARD_INTERFACE, config1_descriptor+KEYBOARD_HID_DESC_OFFSET, 9}, |
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// HID REPORT |
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{0x2200, DEBUG_INTERFACE, debug_hid_report_desc, sizeof(debug_hid_report_desc)}, |
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{0x2100, DEBUG_INTERFACE, config1_descriptor+DEBUG_HID_DESC_OFFSET, 9}, |
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// STRING descriptor |
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{0x0300, 0x0000, (const uint8_t *)&string0, 4}, |
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{0x0301, 0x0409, (const uint8_t *)&string1, sizeof(STR_MANUFACTURER)}, |
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{0x0302, 0x0409, (const uint8_t *)&string2, sizeof(STR_PRODUCT)} |
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@ -282,33 +278,6 @@ static struct descriptor_list_struct { |
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// zero when we are not configured, non-zero when enumerated |
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static volatile uint8_t usb_configuration=0; |
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// the time remaining before we transmit any partially full |
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// packet, or send a zero length packet. |
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static volatile uint8_t debug_flush_timer=0; |
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// which modifier keys are currently pressed |
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// 1=left ctrl, 2=left shift, 4=left alt, 8=left gui |
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// 16=right ctrl, 32=right shift, 64=right alt, 128=right gui |
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uint8_t keyboard_modifier_keys=0; |
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// which keys are currently pressed, up to 6 keys may be down at once |
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uint8_t keyboard_keys[6]={0,0,0,0,0,0}; |
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// protocol setting from the host. We use exactly the same report |
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// either way, so this variable only stores the setting since we |
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// are required to be able to report which setting is in use. |
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static uint8_t keyboard_protocol=1; |
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// the idle configuration, how often we send the report to the |
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// host (ms * 4) even when it hasn't changed |
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static uint8_t keyboard_idle_config=125; |
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// count until idle timeout |
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static uint8_t keyboard_idle_count=0; |
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// 1=num lock, 2=caps lock, 4=scroll lock, 8=compose, 16=kana |
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volatile uint8_t keyboard_leds=0; |
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/************************************************************************** |
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* |
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@ -339,127 +308,6 @@ uint8_t usb_configured(void) |
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} |
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// perform a single keystroke |
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int8_t usb_keyboard_press(uint8_t key, uint8_t modifier) |
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{ |
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int8_t r; |
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keyboard_modifier_keys = modifier; |
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keyboard_keys[0] = key; |
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r = usb_keyboard_send(); |
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if (r) return r; |
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keyboard_modifier_keys = 0; |
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keyboard_keys[0] = 0; |
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return usb_keyboard_send(); |
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} |
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// send the contents of keyboard_keys and keyboard_modifier_keys |
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int8_t usb_keyboard_send(void) |
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{ |
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uint8_t i, intr_state, timeout; |
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if (!usb_configuration) return -1; |
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intr_state = SREG; |
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cli(); |
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UENUM = KEYBOARD_ENDPOINT; |
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timeout = UDFNUML + 50; |
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while (1) { |
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// are we ready to transmit? |
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if (UEINTX & (1<<RWAL)) break; |
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SREG = intr_state; |
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// has the USB gone offline? |
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if (!usb_configuration) return -1; |
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// have we waited too long? |
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if (UDFNUML == timeout) return -1; |
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// get ready to try checking again |
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intr_state = SREG; |
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cli(); |
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UENUM = KEYBOARD_ENDPOINT; |
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} |
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UEDATX = keyboard_modifier_keys; |
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UEDATX = 0; |
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for (i=0; i<6; i++) { |
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UEDATX = keyboard_keys[i]; |
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} |
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UEINTX = 0x3A; |
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keyboard_idle_count = 0; |
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SREG = intr_state; |
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return 0; |
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} |
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// transmit a character. 0 returned on success, -1 on error |
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int8_t usb_debug_putchar(uint8_t c) |
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{ |
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static uint8_t previous_timeout=0; |
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uint8_t timeout, intr_state; |
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// if we're not online (enumerated and configured), error |
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if (!usb_configuration) return -1; |
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// interrupts are disabled so these functions can be |
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// used from the main program or interrupt context, |
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// even both in the same program! |
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intr_state = SREG; |
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cli(); |
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UENUM = DEBUG_TX_ENDPOINT; |
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// if we gave up due to timeout before, don't wait again |
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if (previous_timeout) { |
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if (!(UEINTX & (1<<RWAL))) { |
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SREG = intr_state; |
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return -1; |
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} |
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previous_timeout = 0; |
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} |
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// wait for the FIFO to be ready to accept data |
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timeout = UDFNUML + 4; |
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while (1) { |
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// are we ready to transmit? |
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if (UEINTX & (1<<RWAL)) break; |
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SREG = intr_state; |
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// have we waited too long? |
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if (UDFNUML == timeout) { |
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previous_timeout = 1; |
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return -1; |
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} |
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// has the USB gone offline? |
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if (!usb_configuration) return -1; |
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// get ready to try checking again |
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intr_state = SREG; |
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cli(); |
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UENUM = DEBUG_TX_ENDPOINT; |
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} |
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// actually write the byte into the FIFO |
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UEDATX = c; |
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// if this completed a packet, transmit it now! |
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if (!(UEINTX & (1<<RWAL))) { |
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UEINTX = 0x3A; |
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debug_flush_timer = 0; |
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} else { |
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debug_flush_timer = 2; |
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} |
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SREG = intr_state; |
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return 0; |
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} |
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// immediately transmit any buffered output. |
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void usb_debug_flush_output(void) |
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{ |
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uint8_t intr_state; |
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intr_state = SREG; |
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cli(); |
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if (debug_flush_timer) { |
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UENUM = DEBUG_TX_ENDPOINT; |
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while ((UEINTX & (1<<RWAL))) { |
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UEDATX = 0; |
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} |
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UEINTX = 0x3A; |
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debug_flush_timer = 0; |
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} |
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SREG = intr_state; |
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} |
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/************************************************************************** |
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* |